Stormwarden

The Cycle of Fire Trilogy by Janny Wurts blends sci-fi and fantasy in an epic tale where three young individuals strive to free the Stormwarden, the last Vaere sorcerer, to combat a looming demon threat to humanity. Set in a future where a starship crash transforms society into a feudal system, the aliens aboard are mistakenly labeled as "demons," while the ship's surviving computer evolves into a revered entity. In the first installment, Stormwarden, wizard Auskiere and fire-master Ivan confront the Mharg-demons, but a betrayal sets Ivan on a path of vengeance, igniting a relentless "cycle of fire."